考虑个体恐慌与人群混乱的社会小群体疏散模型

A Social Group Evacuation Model Considering Individual Panic and Crowd Chaos

摘要:

为揭示社会小群体搜寻同伴行为对疏散过程的影响，针对社会小群体的行为特点定义了2种不同的搜寻策略，并且基于性格模型定义个体恐慌情绪的计算方法，同时引入熵理论定量表征疏散个体对周围人群混乱程度的感知，建立了一个考虑个体恐慌与人群混乱的社会小群体疏散模型。仿真结果表明，小群体搜寻行为与小群体数量以及搜寻策略有关，并且会加剧恐慌和人群混乱程度，进而影响疏散效率。

Abstract:

In order to reveal the impact of small group search behavior on the evacuation process， two different search strategies for social small groups were designed， and the calculation method of individual panic mood was defined based on the personality model. Meanwhile， the entropy theory was introduced to quantitatively characterize the perception of evacuation individuals on the degree of chaos in the surrounding population. An evacuation model for social group was established considering individual panic and crowd chaos. The simulation results show that social group search behavior is related to small group number and search strategies， and will aggravate the degree of panic and population chaos， and thus affect the evacuation efficiency.